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It has appeared 3~4times on different ios15 phones. when app not running, provider push two notifications(background+ normal). the notification service extension logs that the normal push was received, but banner not present and tone not alarm, app not awaked(there is no problem with the settings on the device). when lanch the app manually about 30s later, app logs that the background push received("application:didReceiveRemoteNotification:fetchCompletionHandler" called). It seems that ios system block or delay handle the remote notifications, has anyone encountered the same problem?